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Meghna Thapar 5 years, 6 months ago
The blood circulatory system (cardiovascular system) delivers nutrients and oxygen to all cells in the body. It consists of the heart and the blood vessels running through the entire body. The arteries carry blood away from the heart; the veins carry it back to the heart. Systemic circulation carries oxygenated blood from the left ventricle, through the arteries, to the capillaries in the tissues of the body. From the tissue capillaries, the deoxygenated blood returns through a system of veins to the right atrium of the heart.
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Yogita Ingle 6 years, 1 month ago
The three principles of justice outlined in the chapter are discussed below:
(i)First, one of the principle in the principle of treating equals equally. It is considered that all individuals share certain characteristics as human beings. Therefore they deserve equal rights and equal treatment. Some of the important rights which are granted to most liberal democracies today include civil rights such as the rights of life, liberty and property, political rights like the right to vote, which enable people to participate in political processes and certain social rights which would include the right to enjoy equal opportunities with other members of the society.
(ii)Second, apart from the equal rights, the principle of treating equals equally would require that people should not be discriminated against on grounds of class, caste, race or gender. They should be judged on the basis of their work and actions and not on the basis of group to which they belong.
Therefore, if two persons from different castes participate in the same type of work, whether it be breaking stores or delivering pizzas they should receive the same type of reward.
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Gaurav Seth 6 years, 1 month ago
Q : In increasing the area of the film of soap solution from 50cm^2to 100cm^2,3.0×10^-4J of work is done.calculate the value of surface tension of the soap
Answer:
Surface tension = work done / change in area
= 3*10-4/{(100-50)*10-4}
= 3/50 = 0.06 N/m
Posted by Princy Bhawra 6 years, 1 month ago
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Yogita Ingle 6 years, 1 month ago
L2 = 3R2
as MI of a solid cylinder about its own axis is ½ MR2
and MI about an axis passing through its centre of gravity and perpendicular to its length is
M(L2/12 + R2/4)
½ MR2 = M(L2/12 + R2/4)
R2/2 = L2/12 + R2/4
R2/2 – R2/4 = L2/12
L2 = 3R2
L1/2 = 31/2 R
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Yogita Ingle 6 years, 1 month ago
Elasticity is the capability of an object to return to its former shape once a load inducing strain is removed. If you were to drop a steel ball on a very hard surface, it would probably bounce higher than that of rubber. If you drop it on a softer surface, because it would deform less, then the surface it is to bounce off will be the one deforming, so the bounce would be a function of the elasticity of the floor, not of the ball.
A strand of silk is indeed stronger than a steel wire of the same diameter. The reason is that metal uses metallic bounds which is not as strong as the covalent bounds in a macro-molecule like the ones in silk. This also explains why Kevlar, carbon fiber, and carbon nanotubes are also stronger than steel.
Youngs Modulus of steel is more than youngs modulus of rubber.
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